On 11/11/2018 21:09, clipka wrote:
> The easiest solution is probably to create two entirely separate 
> animation sequences: One that takes you from orbit into dense atmosphere 
> (with the planet invisible), and another one that takes you from dense 
> atmosphere down to the surface (with the sky invisible).


I think this addresses the nub of the problem.
Because what we want to do is compress what, in real life, would take 
quite some time, to a video short enough to hold our attention and have 
a reasonable file size.
As Tom Lehrer implied in "Lobachevsky"*. The answer is to cheat.
I think it can be done with just textures, transparency and the right 
transitions. But as my wife is getting out of hospital this week. I 
don’t think that I’ll have time to work on the transitions.

*
For those too young to remember. ;)
https://www.youtube.com/watch?v=gXlfXirQF3A


-- 

Regards
     Stephen

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